iOS: Storage space on the iPhone and iPad fills up way too quickly. Here’s an odd, yet effective trick to reclaim several gigabytes of storage space in a few minutes. The video above by iTwe4kz shows the trick in action: Try to rent a large movie (such as The Lord of the Rings: The Two Towers) from iTunes. You’ll be told you don’t have enough storage space. Click the Settings button in that message and, magically, your device will have more available storage. Rinse and repeat.
When I tried it, I had 912MB of space available on my iPad, but after the first try I now have 2.5GB free.
We’re not sure why this works, but Redditor eavesdroppingyou, who shared this tip on the iPhone subreddit last month, guesses it probably erases useless data from different apps to try to download the movie.